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A Nanocomposite Approach to Microcrack Prevention in Composite Cryotanks

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
NEI Corporation
400 E Apgar Drive Somerset, NJ 08873-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2009
Title: A Nanocomposite Approach to Microcrack Prevention in Composite Cryotanks
Agency: NASA
Contract: NNX09CF45P
Award Amount: $99,989.00


Nanomaterials and nanocomposites offer great potential for improvement in many applications. One such NASA application is the prevention of microcracking as well as improvement in impact strength at cryogenic temperatures of composite cryotanks/carbon fiber-reinforced filament wound composite overwrapped pressure vessels (COPVs) as used in liquid fuel propulsion systems and other related fiber-reinforced structures as used in space exploration. Replacement of the currently-used aluminum-lithium cryotanks with composite cryotanks is advantageous from a weight-saving standpoint, but these composite structures are susceptible to microcracks from long- and short-term exposure to cryogenic temperatures from fuel storage and space environments. In Phase I, we propose to demonstrate the feasibility of a novel engineered nanocomposite in a fiber-reinforced composite in order to eliminate microcracks and enhance the impact strength at cryogenic temperatures. The program is a collaborative effort with a leading developer and manufacturer of COPVs. A key aspect of the proposed program is that it combines nanoscale additives with modifications to the conventional epoxy matrix polymer structure and morphology in ways never done before. The Phase II program will build upon the Phase I demonstration effort by implementing the technology in other epoxy systems and fiber systems used in the filament winding process combined with technological advances made by our strategic partner; implementation of the technology to linerless cryotanks will be a major focus as a drop-in replacement for current aluminum-lithium cryotanks. In addition, we will implement the technology in other fiber-reinforced composite structures as may be applicable to NASA applications.

Principal Investigator:

Daniel Eberly
Principal Investigator

Business Contact:

Ganesh Skandan
Small Business Information at Submission:

NEI Corporation
201 Circle Drive N., Suite 102/103 Piscataway, NJ 08854

EIN/Tax ID: 223568329
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No